1100225 has 12 divisors (see below), whose sum is σ = 1559424. Its totient is φ = 754320.

The previous prime is 1100219. The next prime is 1100243. The reversal of 1100225 is 5220011.

It is not a de Polignac number, because 1100225 - 2⁶ = 1100161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2969 + ... + 3318.

It is an arithmetic number, because the mean of its divisors is an integer number (129952).

2^1100225 is an apocalyptic number.

It is an amenable number.

1100225 is a deficient number, since it is larger than the sum of its proper divisors (459199).

1100225 is an equidigital number, since it uses as much as digits as its factorization.

1100225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304 (or 6299 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1100225 is about 1048.9161072269. The cubic root of 1100225 is about 103.2350493393.

Adding to 1100225 its reverse (5220011), we get a palindrome (6320236).

The spelling of 1100225 in words is "one million, one hundred thousand, two hundred twenty-five".